(geometry) For a plane curve C and a given fixed point P, the locus of points X such that PX is perpendicular to a tangent to the curve passing through X.

plural of Frey curve

(mathematics) The elliptic curve associated with a solution of Fermat's equation.

(geometry) A right strophoid.

(geometry) folium

(topology) A map from the circle, S¹, to a topological space.^((McLarty, p. 4))

plural of J-curve

exponential growth, or a graph detailing it.

Logistic growth, or a graph detailing it.

plural of S-curve